<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">

        <h3 class="title">组件库</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <i class="iconfont icon-user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="用户名"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <i class="iconfont icon-mima" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <i class="iconfont" :class="passwordType === 'password' ? 'icon-no_eye' : 'icon-eye'" />
        </span>
      </el-form-item>
      <!-- <el-checkbox v-model="loginForm.remember" class="m-b-15">记住我</el-checkbox> -->
      <el-button
        :loading="loading"
        type="primary"
        style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin"
      >登录</el-button>
    </el-form>
  </div>
</template>

<script>
import { getUser } from "@/utils/auth";

export default {
  name: "Login",
  data() {
    return {
      // 表单字段
      loginForm: {
        username: "",
        password: "",
        remember: false
      },
      // 表单验证
      loginRules: {
        username: [
          { required: true, message: "请输入账号", trigger: "blur" },
          { min: 3, message: "用户名不能少于3位", trigger: "blur" }
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入密码" },
          { min: 6, message: "密码不能少于6位", trigger: "blur" }

        ]
      },
      loading: false,
      passwordType: "password"
    };
  },
  computed: {
    redirect() {
      return this.$route.query && this.$route.query.redirect;
    }
  },
  mounted() {
    this.getUser();
  },
  methods: {
    // 获取光标
    getfocus() {
      if (this.loginForm.username === "") {
        this.$refs.username.focus();
      } else if (this.loginForm.password === "") {
        this.$refs.password.focus();
      }
    },
    // 如果缓存中有用户信息 回填用户信息
    getUser() {
      const user = getUser();
      const userObj = JSON.parse(user);
      // 如果勾选 回填用户信息
      if (userObj?.remember) {
        this.loginForm.username = userObj || "";
      }
      this.getfocus();
    },

    // 查看密码
    showPwd() {
      // 是否显示密码
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }

      // 点击后获取光标
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },

    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          this.$store.dispatch("user/login", this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || "/" }).catch(() => {}); // 登录成功之后重定向到首页
            this.loading = false;
          }).catch(() => {
            this.loading = false;
          });
        } else {
          return false;
        }
      });
    }
  }
};
</script>

<style lang="scss">

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    margin-bottom: 20px;
    color: #454545;
    &:last-child {
    }
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 12px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: normal;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
